I agree with Vian, if you check the server conditions on any night you will find the PVE and RP-PVE always have a “standard” population, these ones are doing well, showing that more people wish to join PVE servers than PVP.
You can also check this out with the U.S east and west coast servers, where the aforementioned servers have greater activity than PVP servers, therefore, merge the Asia/Pacific servers into one PVE server if they ever intend to merge servers.